package com.doit.day01

//Unit
//Null
//Nothing
object _06_数据类型 {
  def main(args: Array[String]): Unit = {

    val abc :Unit = null
    println(abc.hashCode())//()  0

    val bcd:Null = null




  }

  def acd():Nothing={
    throw new Exception
  }

  def acd1():Unit={
    println("heh")
  }

  def acd2():Int={
   return 2
  }






}
